m2g_tab_click.js

"use strict"; // Act on Tab when link clicked
var oTb, oLk;
oTb = document.querySelectorAll(".tablink4")[0];
oLk = document.querySelectorAll("[href='/#tablink4']")[0];
if( oTb && oLk ){
    oLk.addEventListener( "click", function(e){
        oTb.click();
    } );
}